7(a+1)-3a=5+4(a-1)2

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Solution for 7(a+1)-3a=5+4(a-1)2 equation:


Simplifying
7(a + 1) + -3a = 5 + 4(a + -1) * 2

Reorder the terms:
7(1 + a) + -3a = 5 + 4(a + -1) * 2
(1 * 7 + a * 7) + -3a = 5 + 4(a + -1) * 2
(7 + 7a) + -3a = 5 + 4(a + -1) * 2

Combine like terms: 7a + -3a = 4a
7 + 4a = 5 + 4(a + -1) * 2

Reorder the terms:
7 + 4a = 5 + 4(-1 + a) * 2

Reorder the terms for easier multiplication:
7 + 4a = 5 + 4 * 2(-1 + a)

Multiply 4 * 2
7 + 4a = 5 + 8(-1 + a)
7 + 4a = 5 + (-1 * 8 + a * 8)
7 + 4a = 5 + (-8 + 8a)

Combine like terms: 5 + -8 = -3
7 + 4a = -3 + 8a

Solving
7 + 4a = -3 + 8a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-8a' to each side of the equation.
7 + 4a + -8a = -3 + 8a + -8a

Combine like terms: 4a + -8a = -4a
7 + -4a = -3 + 8a + -8a

Combine like terms: 8a + -8a = 0
7 + -4a = -3 + 0
7 + -4a = -3

Add '-7' to each side of the equation.
7 + -7 + -4a = -3 + -7

Combine like terms: 7 + -7 = 0
0 + -4a = -3 + -7
-4a = -3 + -7

Combine like terms: -3 + -7 = -10
-4a = -10

Divide each side by '-4'.
a = 2.5

Simplifying
a = 2.5

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